If all participants in a repeated-measures study show roughly the same 10-point difference between treatments,then the data are likely to produce a significant value for the t statistic.

Question

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If all participants show a similar difference between treatments, this indicates that there is a consistent effect of the treatment, which can increase the power of the statistical test and lead to a significant value for the t statistic. However, other factors such as sample size and variability within participants can also affect the significance of the results.

If All Participants in a Repeated-Measures Study Show Roughly the Same